Finding the Fourth Proportional to 42,065,930.80, 63,104,801.10 and 13,309,067.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,065,930.80 : 63,104,801.10 = 13,309,067.80 : x
2. Step 2: Convert to fraction form
   42,065,930.80/63,104,801.10 = 13,309,067.80/x
3. Step 3: Cross multiply
   42,065,930.80x = 63,104,801.10 × 13,309,067.80
4. Step 4: Simplify right side
   42,065,930.80x = 839,866,076,345,414.62
5. Step 5: Solve for x
   x = 839,866,076,345,414.62/42,065,930.80
6. Step 6: Final answer
   x = 19,965,469.93